The eyes of the elephant seal adapt to darkness more quickly than any other animal yet tested, thus allowing it to hunt efficiently under the gloomy conditions at its feeding depths of between 300 and 700 meters.

AThe eyes of the elephant seal adapt to darkness more quickly than any other animal yet tested, thus allowing it
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BThe eyes of the elephant seal adapt to darkness more quickly than any other animal yet tested, allowing them
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CThe eyes of the elephant seal adapt to darkness more quickly than do those of any other animal yet tested, allowing it
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DBecause they adapt to darkness more quickly than any other animal yet tested, the eyes of the elephant seal allow it
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EBecause the eyes of the elephant seal adapt to darkness more quickly than do those of any other animal yet tested, it allows them
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